Eternatus is a gigantic, draconic alien Pokémon. Its body has a vaguely draconic shape and a skeletal appearance, and is largely dark violet with red highlights. Its main body and tail are long, thin, and resemble a spinal column, and it has four small, thin limbs ending in claws formed from spindly appendages attached at right angles. Its torso is formed from a cage of appendages resembling ribs, and inside is a glowing pink core that serves as Eternatus's energy source, absorbing energy to sustain it. The core can also project its absorbed energy into massive blasts. Its head is triangular in shape and has a pair of white, eye-like markings in the form of three connected circles, as well as a spindly lower jaw with several diamond-shaped teeth. Over its head is a translucent red film held between five long spikes extending toward its body's rear. It also has a pair of thin tendrils extending from its back, formed from numerous triangular segments. Eternatus's gigantic size makes it the tallest known Pokémon to ever exist. (Source: Bulbagarden.net, CC BY-NC-SA)